在想要连接外网的服务器上删除原有路由,添加新路由
[root@db-server ~]# ip route | grep default
default via 192.168.1.1 dev em1
[root@db-server ~]# ip route del default
[root@db-server ~]# ip route add default via 192.168.1.254 dev em1
测试连接
[root@db-server ~]# ping www.baidu.com
PING www.a.shifen.com (58.217.200.13) 56(84) bytes of data.
64 bytes from 58.217.200.13: icmp_seq=1 ttl=51 time=7.59 ms
64 bytes from 58.217.200.13: icmp_seq=2 ttl=51 time=7.60 ms
64 bytes from 58.217.200.13: icmp_seq=3 ttl=51 time=7.65 ms
64 bytes from 58.217.200.13: icmp_seq=4 ttl=51 time=7.58 ms
64 bytes from 58.217.200.13: icmp_seq=5 ttl=51 time=7.64 ms
^C
--- www.a.shifen.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4621ms
rtt min/avg/max/mdev = 7.585/7.615/7.653/0.113 ms
[root@db-server ~]#
net.ipv4.ip_forward = 1
grep forward /etc/sysctl.conf
sysctl -a | grep forwarding
ip route | grep default
iptables -A FORWARD -i em1 -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o em2 -j MASQUERADE
-A POSTROUTING -s 192.168.1.0/24 -o em2 -j MASQUERADE
-A FORWARD -i em1 -j ACCEPT
/etc/init.d/iptables reload
ip route del default
ip route add default via 192.168.1.254 dev em1
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如有侵权,请联系 cloudcommunity@tencent.com 删除。